Magnetic separator



(No Model.) 5 Sheets-Sheet 1.

J. A. BURDEN.

MAGNETIC SEPARATOR.

No. 399,375. Patented Mar. 12, 1889.

\MTN E55 E5 (No Model.)

5 Sheets-Sheet 2.

J. A. BURDEN.

MAGNETIO SEPARATOR.

Patented Mar. 12, 1889.

(No Model.) 5 Sheets-Sheet 3.

J. A. BURDEN.

MAGNETIC SEPARATOR.

No. 399,375. Patented Mar. 12, 1889.

E \MTNEEEEE \NVENTEJR (No Model.) I 5 SheetsSh-eet 4.

J. A. BURDEN.

MAGNETIC SEPARATOR.

No. 399,375. Patented Mar. 12, 1889.

i /nu I Will I \NITNEEEEE INVENTUR (No Model.) 5 SheetsSL1eet 5.

J. A. BURDEN.

MAGNETIC SEPARATOR. No. 399,375. Patented Mar. 12, 1889.

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/%/////////////////////////////////fl//////////////////W//////fl\MTNEEEEE (\IVENTEIR M 1m Z Mira STATES PATENT OFFICE.

JAMES A. BURDEN, OF TROY, NIUV YORK.

MAGNETIC SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 399,37 5, dated March12, 1889.

Application filed January 13, 1889- Serial No. 296,725. (No niodeld Toall whom 2'2 may COW/06771.:

Be it known that I, J AMES A. BURDEN, of the city of Troy, county ofRensselaer, State of New York, have invented a new and usefulElectro-Magnetic Apparatus for the Separation of Magnetite from itsGangne, of which the following is a specification.

My invention relates to a mechanism for the separation of magnetite ormagnetic oxide of iron from the gangne, with which it occurs in nature,and in cases where the presence of the gangue interferes with the makingof good iron; and my invention is more particularly adapted for thetreatment of that kind of iron ore called apatite, wherein the magneticoxide or magnetite is associated with lime phosphate.

My invention consists (as will be more fully detailed hereinafter inconnection with its 3 illustration) in the combination, with a roller 1made of iron that is divided in two parts in a plane that is at rightangles to its axis, and having insulated bearings and being adapted tobe rotated within a magnetic field, said roller being provided withmeans to remove from the magnetic roller the attracted magnetite, ofanother roller, made of wood or other non-conductin g material, which isplaced parallel to the magnetic roller, so as to leave a space betweenthe two rollers for the passage 5 scribed as follows:

of the previousl vpnlverized ore, with both of said rollers actuated toturn so as to move down the ore between them; a chute arranged under themagnetic roller to receive the magnetite; a chute arranged beneath thenonmagnetic roller to receive the separated gangue, said last-namedchute being made to utilize a draft-current of air that is drawn downbetween said rollers by an exhaust-fan that is arranged to operatewithin the chute that conveys away the gangue, said gangue- 1 chutebeing. made with pockets for the reception and removal of the ganguc.

My invention also consists in the sub-coml'iination of the parts wheresuch parts per- :l'orm specific function, as will be detailed in theclaims.

Accompanying this specification to form a part of it, are live'platcs ofdrawings containing twelve figures, illustrating my inveneach of theopposite ends of the latter.

apparatus. Fig. at is a section taken 011 the line a3 01; of Fig. 1.Fig. 5 is a cross-section showing a modification of the chute thatreceives the magnetite, also showing a varied position of the loop endof magnet. Fig. 6 is a perspective of the magnet, shown as detached, andillustrating the slot-stoppers used to close the outer ends of thetransverse slots made in the pole ends of the magnet for the insertionof the magnetic-rollerjournals. Fig. 7 is a cross-section of the chutethrough which the gangue is conveyed away after having beenseparated-from the magnetite. This figure shows also the position of thefan. Fig. 8 is a side elevation of the magnetic roller, shown asdetached from the other mechanism. Fig. 9 is a side elevation of thenon-magnetic roller. Fig. 10 isa longitudinal section of the magneticroller. Fig. 11 is a longitudinal section of the non-magnetic roller.Fig. 12 is a crossseetion of the magnetic roller taken on either of thelines of Fig. 8.

The several parts of the apparatus thus illustrated are designated bythe letter-reference, and the function of the parts is de- The letter Fdesignates the frame of the apparatus, and H a two-part hopper, throughwhich the previouslypowdered ore is supplied to the rollers.

The lett er R designates the magnet ic roller. which is of iron and madein two parts, m m. bet-ween which latter there is arranged thenon-conducting coupler C, which is preferably made of wood.

The letter J designates the journals of the magnetic roller, one ofwhich is arranged on This roller has a hollow interior, I, and the partsin. m, connect with the coupler by bolts (I The letter R designates aroller that is made of wood, glass, or other non-magnetic matcrial, andthe letter J -dcsignates the shaft or journals whereon said roller isoperated to turn. This roller R has a recess, E, made in its roller-facefor the entrance of the coupler of the magnetic roller when the tworollers are being rotated.

The letter M designates a U-form magnet, the pole ends of which are eachmade to have the transverse slot S for the entrance of the journals J ofthe magnetic roller.

The letter Z) designates insulated hearings, in which the journals J ofthe magnetic roller turn; and S stoppers made to fit snugly into theslots S of the magnet outside of the entered journals of the magneticroller, with the insulated bearings thereof outside of where the saidjournals pass through the magnetslots. These stoppers S are made of thesame kind of metal as the magnetic roller.

The letter 0 designates bearing-boxes arranged to operate laterally in,slideways n in the frame F by means of set-screws T, and thesebearing-boxes b are for the journal ends or shaft J 2 of the nonmagneticroller, the function of the sliding bearing-boxes and setscrews being toadjust the position of the nonconducting roller R relatively to themagnetic roller.

The letter C designates a chute arranged with its upper open end beneaththe magnetic roller, and the letter C another chute arranged with itsupper open end beneath the non-conducting roller. This chute C whereextended downwardly and laterally, has arranged to be operated thereinan exhaust-fan, F the purpose of which is to create a strong atmosphericcurrent down between the rollers to draw away from the magnetitefringing onto the magnetic roller the lighter gangu e or lime phosphate.The letter P designates pockets arranged in the chute C to receive thegangue or lime phosphate.

The letter D designates a scraper that is pivoted at p and madeto engageon its upper end with the surface of the magnetic roller to scrapetherefrom the attracted magnetite, there being one of these scrapersarranged to engage with the surface of the magnetic roller on each sideof the coupler C.

The letter lV designates a circuit-wire that helically encircles themagnet with its ends connecting with a battery, 13.

The letter G designates a gearavheel arranged on one of the outer endsof the nonconductinga'oller journals J adapted to receive power and tocommunicate it to said roller.

The letter P designates a grooved pulley arranged on the journal J whichis opposite to that at which the gear-wheel is located, whichcommunicates power thereto.

The letter P designates a grooved pulley that is preferably made of woodor glass or other non-magnetic material, and which is keyed to thatjournal, J, which is on the same side of the machine as the pulley P andwhere said journal end projects beyond the insulated bearing in which itturns; and the letter B designates a cord belt that is crossed andarranged to communicate power and motion to the magnetic roller R bymeans of the connection made by said belt with the pulleys P and P Inthe modification shown at Fig. 5 the base of the magnet is swung outlaterally, where, resting on the insulated pedestal p and the chute itis shown as carried down nearly vertical, while in the otherillustrations the said chute is made to slant downwardly and outwardly.The object of this modification is merely to give a nearly-verticaldirection to the chute which may be desirable in some instances.

The operation of the mechanism thus described is as follows: \Vith thewires of the magnet connected with a battery the magnet becomes excitedand the roller R becomes magnetic, and as the ore is supplied to thehoppers II the magnetite is attracted to the face of the roller R, so asto adhere to the surface thereof at each side of the coupler C, whilethe gangue or lime phosphate, being non-magnetic and lighter than themagnetite, is blown from its adhesion to the latter and conveyed away bythe action of the fan through the chute C The magnetite adhering to theroller R is scraped therefrom, so as to pass off in the chute C by thedoctors or scrapers D. Should once passing the ore' through the rollersnot wholly remove the gangue, it may be passed through a second time.The ore when thus used should be pulverized sufiicientl y to separatethe crystals of the magnetite from the gangue.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. In an apparatus for separating magnetite from a non-magnetic gangue,the combination, with an iron roller that is made in two parts andhaving an intermediate coupler of non-magnetic material, said ironroller at its outer ends being within the excited field of anelectro-magnet and provided with journals and insulatedjournal-bearings, and having an insulated pulley at one end, of anonmagnetic roller arranged by the side of the metal roller, with anintervening space for the passage of the ore, said non-magnetic rollerbeing provided with journaled ends having bearings and constructed toreceive motion, and with a pulley and belt to transmit the same to theinsulated pulley of the metal roller, substantially in the manner as andfor the purposes set forth.

2. In an apparatus for separating magnetite from a nonmagnetic gangue,the combina tion, with an iron roller that is made in two parts havingan intermediate non-magnetic coupler, said iron roller at its outer endsbeing within the excited field of an electro-magnet and provided withjournals having insulated bearings, with an insulated pulley at one end,of a non-magnetic roller arranged by the side of the iron roller with anintermedi ate passage for the ore, said non-magnetic roller beingprovided with journaled ends and hearings and constructed to receivemotion, and with a pulley and belt to transmit power to the iron.rollerpulley, a chute arranged beneath the metal roller, and a chutearranged heneath the non-1n agnetie roller, substantially in the manneras and for the purposes set forth.

3. In an apparatus'l'or separating niagilet'ite from a non-magneticgangue, the combination, with an iron roller made in two parts 5 at theother end, a ehute leading from the iron roller, and a chute loading 1"rom the nonmagnetic roller, which latter chute is pro vided with an.interiorly-plaeed exhaust-fan, substantially as and for the purposes setforth.

4. The combination, with the iron roller R, made in two parts, connectedby a non-1nagnetie coupler, (1, and having the end journa .l, of theeleetro-nlagnet M, having its pole ends adjacent to the outer ends ofthe roller, and slotted at its pole ends for the side insertion of theroller-;journals, insulated hearings for said journals outside of wherepassing through the eleetro-inagnet, and stoppers 5*, made to (-losesaid slots Where not oeeupied by the journals, as and for the purposesset forth.

Signed at 1130 llroznlway, New York, this 2d day of January, 1989.

J'AS. A. BURDEN. Witnesses:

T. B. twonuin, EDWARD 1). Gnixiv'r.

